.huan{
    padding:0;
    background: black;
    color: white;
}
.huan1{
    padding: 0;
    background: white;
    color: black;
}
.enen{
    padding: 24px;
background: black;
color: white;
}
.enen1{
    padding: 24px;
background: white;
color: black;
}